Severe strongyloidiasis (hyperinfection, disseminated disease) may be insidious; occasionally, symptoms may have an abrupt onset. Fever is almost always present in disseminated disease. Invasion of larvae into tissue is potentially massive.
Dark spots on face are usually a sign of skin damage. Dark spots on the skin are typically caused by hyperpigmentation, or the skin in that area forming excess melanin. This typically occurs when the skin in that area has been damaged. In most cases you can remove dark spots by home remedies but if you have the symptoms of âwhen to a doctorâ, please seek medical help.
1 Insect Bites: Mosquito and other bug bites make some black skin react by getting dark. Scratching the skin makes it worse by irritating it. In some cases the skin can even become infected.  Acne Scars: If you have acne issues, when pimples clear you may still have to deal with scars left behind.